Issue #2984782 by amateescu, plach, catch, jibran, kristiaanvandeneynde: Add an API for converting entity type schemas to (non-)revisionable/(non-)translatable, with or without data

Issue #2776975 by joelpittet, dawehner, tim.plunkett, xjm, pfrenssen: March 3, 2017: Convert core to array syntax coding standards for Drupal 8.3.x RC phase

Issue #2665992 by alexpott, klausi, heykarthikwithu, xjm, tstoeckler: @file is not required for classes, interfaces and traits

Issue #2411791 by yched, plach: Provide empty methods rather than abstract methods in EntityTypeEventSubscriberTrait / FieldStorageDefinitionEventSubscriberTrait